EP2227649B1 - Raccord de tuyau - Google Patents

Raccord de tuyau Download PDF

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Publication number
EP2227649B1
EP2227649B1 EP08866213.5A EP08866213A EP2227649B1 EP 2227649 B1 EP2227649 B1 EP 2227649B1 EP 08866213 A EP08866213 A EP 08866213A EP 2227649 B1 EP2227649 B1 EP 2227649B1
Authority
EP
European Patent Office
Prior art keywords
pipe
fastening element
interior wall
strip
fitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08866213.5A
Other languages
German (de)
English (en)
Other versions
EP2227649A2 (fr
EP2227649A4 (fr
Inventor
Eitan Furst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pth Engineering Ltd
Original Assignee
Pth Engineering Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pth Engineering Ltd filed Critical Pth Engineering Ltd
Publication of EP2227649A2 publication Critical patent/EP2227649A2/fr
Publication of EP2227649A4 publication Critical patent/EP2227649A4/fr
Application granted granted Critical
Publication of EP2227649B1 publication Critical patent/EP2227649B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/24—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with parts screwed directly on or into the hose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/065—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
    • F16L19/0653—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring the ring being rotatably connected to one of the connecting parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/083—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping
    • F16L19/086—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping with additional sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/24—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action
    • F16L37/244—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener

Definitions

  • the present invention relates to pipe fittings, in general and, in particular, to pipe fittings for use with pipes in which a groove can be cut.
  • Pipe fittings for connecting lengths of pipe are well known.
  • laminar plastic e.g., polyethylene
  • a fitting including a rotatable, externally threaded nipple to which the pipe can be attached, the nipple having a base shaped to receive a wrench. Rotation of the nipple by a wrench causes the threads on the nipple to cut into the pipe, thereby preventing removal of the pipe from the fitting.
  • the threaded nipple is rotatably seated inside a locking nut, having an associated gasket, for tightening the nipple to any fitting having a threaded end.
  • a locking nut having an associated gasket
  • this connection might leak because of a faulty seal or insufficient tightening by the user. Therefore, such fitting does not always meet customary standards for use in hidden or inaccessible locations.
  • fittings which permit rapid coupling to a pipe by pushing the pipe onto the fitting.
  • these fittings include arrangements to prevent removal of the pipe from the fitting by simply pulling on the pipe. Therefore, in order to release the fitting from the pipe or vise verse, either the pipe must be cut, which prevents reuse of the fitting, or elaborate equipment is required.
  • a pipe fitting fitting arrangement having the features of the preamble of claim 1, is known from document WO 2006/120671 A2 .
  • a pipe fitting for a groovable pipe (a pipe in which a groove can be cut), the fitting including a housing and a connecting cylinder at least partially disposed in one side of the housing, the connecting cylinder being sealingly mounted in the housing.
  • the fitting further includes an outer sleeve freely rotatable about the connecting cylinder, having an inner pipe engaging portion with a with a plurality of horizontal slits defining elongated strips, and an integral, external screws thread adapted and configured to groove and engage an interior wall of the pipe.
  • the present invention relates to a pipe fitting for groovable pipes which permits quick connection of the pipe to the fitting and permits easy removal of the pipe from the fitting without cutting the pipe thus allowing reuse of the fitting.
  • the pipe fitting includes a housing with a connecting cylinder sealingly mounted in the housing, the cylinder having a portion of reduced diameter with a groove defining a sloping shoulder.
  • a pipe fastening element is rotatably mounted about the reduced diameter portion of the connecting cylinder and about the groove, for selectively engaging the pipe during a quick connect action.
  • the fitting further includes elements for selectively engaging the interior wall of the pipe for preventing removal of the pipe from the fitting by simply pulling on the pipe yet permitting removal of the pipe from the fitting when manipulating the pipe fastening element.
  • Pipe fitting 10 constructed and operative in accordance with one embodiment of the present invention for a pipe 12 , in which a groove can be cut, referred to herein as a groovable pipe.
  • Pipe fitting 10 includes a housing 14 and a connecting cylinder 16 at least partially disposed in one side of the housing 14 .
  • the connecting cylinder 16 is sealingly mounted, as shown at 17 , in the housing 14 , preferably in accordance with the appropriate standards for hidden pipe fittings. It is a particular feature of the invention that the connecting cylinder is sealingly connected to the housing during manufacture, so no separate tightening nut and associated gasket are required. It will be appreciated that connecting cylinder 16 may also be fully disposed in housing 14 .
  • Connecting cylinder 16 may be formed as an integral part of housing 14 .
  • Connecting cylinder 16 defines a portion 19 of reduced diameter, which includes an annular groove 21 , described in detail below.
  • Pipe fitting 10 further includes a pipe fastening element 20 freely rotatable about the outer wall of portion 19 of connecting cylinder 16 .
  • Pipe fastening element 20 defines an annular pipe receiving recess 27 .
  • At least one, and preferably a plurality of elongated strips 26 define the interior wall of recess 27 .
  • Each strip has a recessed portion 31 providing flexibility to the strips 26 to allow the free ends thereof to move in and out of groove 21 .
  • An integral, external screw thread 22 is defined about the strips 26 , such that a portion of screw thread 22 is defined on each strip. Screw thread 22 has a triangular cross-section, sloped on one side and perpendicular to strip 26 on its other side.
  • pipe fastening element 20 is mounted about smaller diameter portion 19 of connecting cylinder 16 about annular groove 21 .
  • Groove 21 defines a shoulder 23 having a sloping portion 23' .
  • Portion 19 is longer than the length of pipe fastening element 20 , allowing the pipe fastening element to slide reciprocatingly longitudinally along portion 19 until strips 26 abut against shoulder 23 of groove 21 .
  • Shoulder 23 serves as a stop member preventing pipe fastening element 20 from sliding off connecting cylinder 16 while the sloping portion 23' thereof urges strips 26 towards pipe 12 , whereby threads 22 cut and engage the pipe wall and prevent the pipe from sliding off connector 16 .
  • FIG. 2 there is shown a partially cut-away, partial side sectional illustration of the pipe fitting with the pipe 12 pushed all the way into pipe receiving recess 27 .
  • the pipe smoothly slides over the sloped side of threads 22 on strips 26 , while urging flexible strips 26 inwards into groove 21 and towards one another.
  • pipe fastening element 20 moves towards housing 14 until it abuts against the housing.
  • pipe 12 is inserted into annular recess 27 in pipe fastening element 20 until it abuts the end wall of the recess.
  • one or more apertures 29 may be provided through pipe fastening element 20 to permit a user to verify that the edge of the pipe is fully received within recess 27 .
  • one or more additional grooves 34 may be provided about connecting cylinder 16 outside of pipe fastening element 20 , for receiving one or more o-rings 36 , or other suitable sealing elements, for sealing engagement with the inner wall of the pipe.
  • Pipe fastening element 20 preferably includes an external, manipulable portion 28 , to permit rotation of pipe fastening element 20 in order to remove pipe 12 from the fitting.
  • rotation of pipe fastening element 20 against the direction of screw threads 22 causes the threads 22 to complete spiral grooves 22' in interior wall 18 , creating a screw thread that acts to move pipe 12 backwards out of recess 27 until the pipe can be removed from the fitting.
  • the invention is particularly suitable for use with laminated plastic pipes, such as pipes having an inner layer of polyethylene, including PEX pipes, it can also be used with any other pipes which have an interior wall which is soft enough to be grooved but strong enough to be retained firmly by strips 26 when the piping is assembled and to remain in place under conditions of engineering requirements and normal use. It will be further appreciated that the invention may be suitable also for any elastic pipes which can be grooved by strips 26 of the fitting.
  • the fitting may be made of any material suitable for carrying the particular fluid passing through the pipes.
  • the pipe fitting 10 of Figure 1a is illustrated as having a connecting cylinder for coupling to a single pipe.
  • the pipe fitting may have any design and may include a plurality of connecting cylinders with associated pipe connecting elements for coupling to a plurality of pipes.
  • Two additional connectors, each having at least one pipe connecting element according to the invention, are shown in Figures 4 and 5 , by way of example, only.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Claims (6)

  1. Raccord de tuyau comprenant:
    un boîtier (14);
    un cylindre de raccordement (16) au moins partiellement disposé dans ledit boîtier (14), le cylindre de raccordement étant monté de façon étanche dans ledit boîtier, ledit cylindre (16) ayant une partie à diamètre réduit (19) définissant un épaulement (23);
    un élément de fixation (20) du tuyau monté rotatif autour de ladite partie à diamètre réduit dudit cylindre de raccordement (16) pour engager sélectivement le tuyau (12); et
    ledit élément de fixation (20) du tuyau incluant des moyens (26) pour engager sélectivement la paroi intérieure (18) du tuyau (12), dans lequel lesdits moyens (26) pour l'engagement sélectif définissent la paroi intérieure d'une cavité de réception d'un tuyau annulaire (27) et présentent un filetage de vis externe, intégral (22) défini autour de celle-ci
    caractérisé en ce que
    ladite portion à diamètre réduit (19) inclut une rainure annulaire (21) qui définit ledit épaulement (23) qui présente une portion inclinée (23');
    l'élément de fixation de tuyau (20) est en outre monté de manière rotative autour de ladite rainure annulaire (21);
    ladite portion à diamètre réduit (19) est plus longue que la longueur de l'élément de fixation du tuyau (20) de façon à permettre audit élément de fixation de tuyau (20) de coulisser en va-et-vient longitudinalement le long de ladite portion à diamètre réduit (19); et
    lesdits moyens (26) pour engager sélectivement la paroi intérieure (18) du tuyau (12) sont configurés pour permettre le retrait du tuyau (102) du raccord lors de la manipulation dudit élément de fixation de tuyau (20).
  2. Raccord selon la revendication 1, dans lequel lesdits moyens pour engager sélectivement la paroi intérieure (18) d'un tuyau (12) inclut au moins une bande flexible (26) définissant une paroi intérieure de ladite cavité, et ladite au moins une bande allongée (26) comprend des portions du filetage de vis externe, intégral (22) définies autour de celle-ci, de sorte qu'une portion de filetage de vis (22) est définie sur chacune desdites au moins une bande (26) et adaptée et configurée pour couper et engager la paroi intérieure (18) du tuyau, ladite au moins une bande (26) étant disposée de façon adjacente à ladite rainure (21), une extrémité libre de ladite au moins une bande (26) étant configurée et agencée pour un mouvement sélectif dans la rainure (21), lorsqu'un tuyau est poussé dans la cavité (27), et hors de ladite rainure (21), de sorte que le filetage de vis (22) coupe et engage une paroi intérieure du tuyau pendant que ladite au moins une bande (26) coulisse le long de ladite portion inclinée (23') dudit épaulement (23) jusqu'à ce que ladite bande s'appuie contre ledit épaulement (23).
  3. Raccord de tuyau selon la revendication 1 ou la revendication 2, dans lequel ledit élément de fixation de tuyau (20) inclut en outre une portion externe, manipulable (28) pour faciliter la rotation dudit élément de fixation de tuyau (20) pour permettre le retrait du tuyau (102) du raccord lors de la manipulation dudit élément de fixation de tuyau.
  4. Procédé de formation d'un raccord de tuyau pour un tuyau pouvant être rainuré, le procédé comprenant:
    la fourniture d'un cylindre de raccordement (16) monté de manière étanche dans un boîtier (14);
    la formation d'une portion à diamètre réduit (19) incluant une rainure annulaire (21) définissant un épaulement incliné (23, 23') autour dudit cylindre (16);
    le montage de manière rotative d'un élément de fixation de tuyau (20) autour de ladite portion à diamètre réduit (19) dudit cylindre de raccordement (16) et autour de ladite rainure (21) pour engager sélectivement le tuyau lors d'une action de raccordement rapide;
    la fourniture de ladite portion à diamètre réduit (19) plus longue que la longueur de l'élément de fixation de tuyau (20) permettant audit élément de fixation de tuyau (20) de coulisser en va-et-vient longitudinalement le long de ladite portion à diamètre réduit (19); et
    la fourniture de moyens (26) pour engager sélectivement la paroi intérieure (18) du tuyau qui définit la paroi intérieure d'une cavité de réception de tuyau annulaire (27), et sont pourvus d'un filetage de vis externe, intégral (22) défini autour de ceux-ci, pour permettre le retrait du tuyau du raccord lors de la manipulation dudit élément de fixation du tuyau.
  5. Procédé selon la revendication 4, comprenant en outre:
    l'insertion d'un tuyau dans la cavité de réception de tuyau (27) dans l'élément de fixation de tuyau (20);
    la poussée du tuyau (12) sur ledit raccord et dans la cavité (27) poussant lesdits moyens (26) pour engager sélectivement une paroi intérieure (18) du tuyau (26) vers l'intérieur de la rainure annulaire (21) avec le tuyau (12) coulissant sur des cotés inclinés du filetage de vis (22) ;
    le retrait du tuyau (12) du boîtier (14) de sorte que les cotés perpendiculaires du filetage de vis (22) engagent et rainurent la paroi intérieure (18) de tuyau (12) ; et
    le retrait en outre du tuyau (12) poussant lesdits moyens (26) pour engager sélectivement une paroi intérieure (18) du tuyau vers l'extérieur depuis la rainure (21) pour couper plus en profondeur dans le tuyau (12).
  6. Procédé selon la revendication 5, dans lequel :
    lesdits moyens pour engager sélectivement la paroi intérieure (18) du tuyau incluent au moins une bande flexible (26) comprenant des portions d'un filetage de vis externe, intégral (22) défini autour de ladite au moins une bande flexible (26), de sorte qu'une portion d'un filetage de vis (22) est définie sur chacune des au moins une bande;
    l'étape de pousser lesdits moyens pour engager sélectivement la paroi intérieure (18) du tuyau vers l'intérieur inclut la poussée de ladite au moins une bande (26) vers l'intérieur dans la rainure annulaire (21) en faisant coulisser le tuyau sur des cotés inclinés des filetages (22) sur ladite au moins une bande (26); et
    l'étape d' engagement sélectif inclut le retrait du tuyau (12) pour tirer l'élément de fixation de tuyau (20) hors du boîtier (14), faisant coulisser ladite au moins une bande (26) le long de la portion inclinée (23') de l'épaulement (23), qui pousse ladite au moins une bande (26) hors de la rainure (21) et lesdits filetages (22) pour couper plus en profondeur dans le tuyau (12), jusqu'à ce que ladite au moins une bande s'appuie contre l'épaulement (23).
EP08866213.5A 2008-01-02 2008-12-22 Raccord de tuyau Active EP2227649B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1850008P 2008-01-02 2008-01-02
PCT/IL2008/001651 WO2009083955A2 (fr) 2008-01-02 2008-12-22 Raccord de tuyau

Publications (3)

Publication Number Publication Date
EP2227649A2 EP2227649A2 (fr) 2010-09-15
EP2227649A4 EP2227649A4 (fr) 2014-05-14
EP2227649B1 true EP2227649B1 (fr) 2016-06-08

Family

ID=40824808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08866213.5A Active EP2227649B1 (fr) 2008-01-02 2008-12-22 Raccord de tuyau

Country Status (9)

Country Link
US (1) US9022431B2 (fr)
EP (1) EP2227649B1 (fr)
CN (1) CN101918747B (fr)
EA (1) EA017032B1 (fr)
ES (1) ES2589957T3 (fr)
HU (1) HUE030517T2 (fr)
IL (1) IL195939A (fr)
PL (1) PL2227649T3 (fr)
WO (1) WO2009083955A2 (fr)

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US9335800B2 (en) * 2012-10-26 2016-05-10 ZAO “RSC Technologies” Cooler for computing modules of a computer
WO2014129911A1 (fr) * 2013-02-19 2014-08-28 Fisher & Paykel Healthcare Limited Appareil et procédé pour fournir des gaz à un utilisateur
DE202014010695U1 (de) * 2013-03-26 2016-05-09 Zakryitoe Aktsionernoe Obschestvo "Rsc Technologies" Montagegestell für die Anordnung von elektronischen Komponenten
US20150219259A1 (en) * 2014-02-06 2015-08-06 Weems Industries, Inc. Swivel hose coupling with outer grip
JP6497861B2 (ja) * 2014-08-04 2019-04-10 株式会社ブリヂストン 管継手
US10473243B2 (en) * 2016-01-26 2019-11-12 Tectran Mfg. Inc. Hose repair kit with live swivel coupling
AU2017230785B2 (en) * 2016-03-09 2022-07-21 James O'mahony A high pressure hose coupler
US11530762B2 (en) * 2019-11-05 2022-12-20 The Boeing Company Coupling nut visible tightness indicator

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US3820825A (en) * 1973-04-12 1974-06-28 Everflex Prod Inc Flexible hose coupling and swivel nut connector assembly
FR2317585A1 (fr) 1975-07-07 1977-02-04 Capri Codec Sa Raccord pour tubes spirales
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EP1070216B1 (fr) * 1998-02-09 2004-08-18 Oystertec plc Raccord de tuyau et manchon filete afferent
AT410706B (de) 2000-04-28 2003-07-25 Ke Kelit Kunststoffwerk Gmbh Anschlussvorrichtung für ein kunststoffrohr
KR100808822B1 (ko) * 2001-11-23 2008-03-07 게오르크 피셔 하우스테히닉 아게 파이프용 급동 커플링
US7140645B2 (en) * 2002-06-27 2006-11-28 Gerald Cronley Quick-connecting coupler for hoses, pipes and faucets
IL168462A (en) 2005-05-08 2006-07-05 P T H Engineering Ltd Pipe fitting and method for formation thereof

Also Published As

Publication number Publication date
EP2227649A2 (fr) 2010-09-15
ES2589957T3 (es) 2016-11-17
EP2227649A4 (fr) 2014-05-14
US20100283235A1 (en) 2010-11-11
WO2009083955A2 (fr) 2009-07-09
EA201001072A1 (ru) 2011-02-28
HUE030517T2 (en) 2017-05-29
WO2009083955A3 (fr) 2010-03-11
US9022431B2 (en) 2015-05-05
IL195939A0 (en) 2009-09-01
CN101918747B (zh) 2012-12-12
CN101918747A (zh) 2010-12-15
EA017032B1 (ru) 2012-09-28
IL195939A (en) 2012-07-31
PL2227649T3 (pl) 2016-11-30

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